We just got a Sony Bravia KDL-50w800c.
We plugged in our old Chromecast stick before we realized that Chromecast was actually built into the TV. (Not mentioned in any manuals or anything. Yes, that should have been intuitive. Whoops.) However, we can't get the built in Chromecast to work. We unplugged the Chromecast stick (would be nice to use it on the old TV in another room).
When we try to cast, the TV will pop up as a device to link to, but when we try to connect nothing appears on the screen and the cast is instantly disconnected. We've tried casting with Galaxy S5 and Galaxy Tab 4: exact same results both times.
We've tried restarting devices and router (Cisco Linksys E2500).
Screen mirroring does work. The old stick works. Built in Chromecast does not.
Did we permanently screw up our brand new TV by plugging in the Chromecast stick?
Update: Fixed! Start and stop the app, and then restart the TV. It was definitely a conflict with the Chromecast stick.
Casting from which app(s), and casting what exactly? Audio, video, pics? Specific formats or all? If you can isolate the issue, we'll be halfway there.